What is the structure of a palm tree?
All palm leaves are attached to the trunk by a flared leaf base. In some palms (e.g., Roystonea spp., Dypsis spp., etc.), the leaf bases are tubular and wrap around each other, forming a smooth, stem-like structure called a crownshaft.
What is the structure of the palm?
The palm has five bones known as metacarpal bones, one to each of the 5 digits. These metacarpals have a head, a shaft, and a base. Human hands contain fourteen digital bones, also called phalanges, or phalanx bones: two in the thumb (the thumb has no middle phalanx) and three in each of the four fingers.
What is the structure of the hand?
The human hand is made up of a total of 27 individual bones: 8 carpal bones, 5 metacarpal bones and 14 "finger bones" (also called phalanges) are connected by joints and ligaments. About one quarter of all our body's bones are found in our hands.Aug 31, 2010
What is the structure of fingers?
Each finger has 3 phalanges (the distal, middle, and proximal); the thumb only has 2. Metacarpal bones. The 5 bones that compose the middle part of the hand.
What is palm in human body?
hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the metacarpal bones, and the phalanges.
What is the description of palm tree?
any of several kinds of tropical tree with a tall, slender, smooth trunk, no branches, and large, spreading leaves at the top: All the islands have pristine shores, swaying palm trees, aquamarine waters, and lots of ocean-side adventure. See also palm2 (def. 1).
How do you describe palm leaves?
Palm leaves are medium to large in size and elongated and broad in shape. The leaves range in color from deep green to vibrant green and grow in an alternate, palmate, or spiral pattern.
What is the shape of a palm tree?
Shapes and flowers
Most palms are a straight, unbranched stem, but sometimes a branching stem, or even a creeping vine, such as the rattan. They have large evergreen leaves that are either 'fan-leaved' (palmate) or 'feather-leaved' (pinnate) and arranged in a spiral at the top of the trunk.
What is the shape of a palm tree leaf?
Palm leaflets are typically V shaped in cross section with the midvein at the apex of the V. Palm leaves with upright V-shaped leaflets are called induplicate, while those with an inverted V shape are called reduplicate.
How would you describe a palm tree?
any of several kinds of tropical tree with a tall, slender, smooth trunk, no branches, and large, spreading leaves at the top: All the islands have pristine shores, swaying palm trees, aquamarine waters, and lots of ocean-side adventure.
What are the 4 main shapes of palm fronds?
When identifying the species of a member of the palm family, the shape of the leaves (also known as “fronds”) is an important and commonly considered factor. There are four basic forms that are characteristic of palm leaves: pinnate, palmate, bipinnate and entire.Sep 10, 2015