WordNet

place something or someone in a certain position in order to secretly observe or deceive; "Plant a spy in Moscow"; "plant bugs in the dissidents apartment"
(botany) a living organism lacking the power of locomotion (同)flora, plant life
buildings for carrying on industrial labor; "they built a large plant to manufacture automobiles" (同)works, industrial plant
an actor situated in the audience whose acting is rehearsed but seems spontaneous to the audience
something planted secretly for discovery by another; "the police used a plant to trick the thieves"; "he claimed that the evidence against him was a plant"
put firmly in the mind; "Plant a thought in the students minds" (同)implant
put or set (seeds, seedlings, or plants) into the ground; "Lets plant flowers in the garden" (同)set
place into a river; "plant fish"
hold firmly (同)hold_on
an automatic instinctive unlearned reaction to a stimulus (同)reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned_reflex, physiological reaction
the act of gripping something firmly with the hands (or the tentacles) (同)taking hold, seizing, prehension
understanding with difficulty; "the lecture was beyond his most strenuous graspings"
relating to or occurring on the undersurface of the foot; "plantar warts can be very painful"

PrepTutorEJDIC

(動物に対して)『植物』,草木・(樹木に対して)『草』,草本(そうほん)( 木部があまり発達せず地上部が一年で枯れる植物)・苗,苗木・生産設備,工場,プラント設備,装置・《俗》(人をおとしいれる)わな,おとり / 〈苗など〉‘を'『植える』,〈種〉‘を'まく・(植物を) ‘に'植える《+『名』+『with』+『名』》 / (…に)〈思想など〉‘を'植えつける《+『名』+『in』+『名』》・《場所の副詞[句]を伴って》(ある場所)…‘を'しっかりと置く(すえる,立てる) / ・〈工場・生産設備など〉‘を'建設する・《俗》〈スパイ〉‘を'送りこむ,〈わな〉‘を'仕掛ける・（嫌疑がかかるように）こっそり置く
…‘を'『しっかり握る』,『ぎゅっとつかむ』 / …‘を'『理解する』,把握する / (…を)捕まえ(捕らえ)ようとする《+『at』(『for』)+『名』》 / 《通例a~》(手などでしっかり)『捕まえること』,『つかむこと』 / 『理解』[『力』],知的把握[力]
反射(刺激に対する無意識の反応) / 《複数形で》反射的な動き / (光などの)反射,反射光;映像 / 反射性の / (カメラが)レフ鋼の,反射型の
欲深い(greedy) / しっかりつかむ,ぎゅっと握る
足の裏の,足底の

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The grasp reflex and moro reflex in infants: hierarchy of primitive reflex responses.

Futagi Y1, Toribe Y, Suzuki Y.
International journal of pediatrics.Int J Pediatr.2012;2012:191562. doi: 10.1155/2012/191562. Epub 2012 Jun 11.
The plantar grasp reflex is of great clinical significance, especially in terms of the detection of spasticity. The palmar grasp reflex also has diagnostic significance. This grasp reflex of the hands and feet is mediated by a spinal reflex mechanism, which appears to be under the regulatory control
PMID 22778756

Sanders RD1, Gillig PM.
Innovations in clinical neuroscience.Innov Clin Neurosci.2011 Apr;8(4):24-9.
Psychiatric patients often do not cooperate fully with the neurologic examination. Reflexes virtually bypass patient effort and are difficult to consciously determine. This article reviews muscle stretch (deep tendon) reflexes, and pathological reflexes including the extensor plantar (Babinski) and
PMID 21637631

Neural mechanism and clinical significance of the plantar grasp reflex in infants.

Futagi Y1, Suzuki Y.
Pediatric neurology.Pediatr Neurol.2010 Aug;43(2):81-6. doi: 10.1016/j.pediatrneurol.2010.04.002.
The plantar grasp reflex can be elicited in all normal infants from 25 weeks of postconceptional age until the end of 6 months of corrected age according to the expected birth date. This reflex in human infants can be regarded as a rudiment of responses that were once essential for ape infants in ar
PMID 20610116

中枢	消失時期	反射
脊髄	～生後3ヶ月		magnet reflex
		歩行反射	stepping reflex
		把握反射	grasping reflex
		非対称性緊張性頚部反射	asymmetrical tonic neck reflex	背臥位にした新生児の頭を一方に向けると、顔の向いた方の上下肢は伸展し、後頭側の上下肢は屈曲する
脊髄-橋	～生後6ヶ月	モロー反射	Moro reflex	頭を持ち上げて急に落とす動作をした時に両上肢を開き、側方から正中方向に抱きつくような動き
		口唇探索反射	rooting reflex
		緊張性頚反射	tonic neck reflex	腹位水平抱きまたは座位で頚を背屈すると上肢が伸展、背筋が緊張し、頚を前屈すると上肢が屈曲し、体幹のトーヌスが減弱する
中脳	生後6ヶ月～5歳	立ち直り反射	righting reflex
		頚立ち直り反射
		体幹立ち直り反射
		視性立ち直り反射
大脳皮質中脳	生後8ヶ月～終生	パラシュート反射		水平位にして、突然頭を下げると腕が伸びて身体を支えようとすること。